Abuse, however horrific for the victim, does not necessarily constitute grounds for an annulment. Neither does a post-marital refusal to use NFP and to desire to obtain a sterilization. Those are conditions that arose after the marriage took place and thus do not necessarily mean that marital consent was invalidated at the time of the marriage.
Marital consent involves understanding that Christian marriage must be faithful, fruitful, and "forever" (i.e., lifelong). If you can prove that your husband had a pre-existing sex addiction that compromised his ability to vow to be faithful to you (not to mention fruitful and lifelong, given the warping of sexuality that sex addiction can cause), then you might have grounds for annulment on the issue of your husband's sex addiction.
In any case, at this point I recommend concentrating on obtaining the divorce from a man who has demonstrated that he is a positive danger to your health and safety. Once the divorce is final, then you can worry about seeking an annulment. God bless.